Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler

SKU: BOR40004S

Mufflers

BOR XR-1 Mufflers...

Borla

Borla 3 -1/2in In/Out x 5in Round x 8in Long XR-1 Sportsman Shorty Racing Muffler

SKU: BOR40004S

Mufflers

BOR XR-1 Mufflers...

IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

XR-1(r) Sportsman Racing Muffler. 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length. Compact size is perfect for applications with limited space. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. There is no logo embossment on this part. Hands down, BORLA(r)'s XR-1(r) raceline parts offer the best balance of sound and power. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Product Overview

High quality austenitic stainless steel. Patented, race-winning XR-1 Raceline technology. 3 options: Offset - Made with the same patented, flow through design as the XR-1 Sportsman oval. The inlet/outlet are offset to the same side of the muffler, to accommodate transmission and frame rail interference on some applications Oval -- BORLAs #1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and highest flowing racing muffler in its class and at a competitive price. Record-holder Hurley Blakeney has run BORLAs on his AA/AT Ford T-Bird because he loves the quieter driver compartment without giving up any power.Round - Made with the same patented, flow through design as the XR-1 Sportsman Oval. This Muffler is 5 inches in diameter and 15 inches long. Designed for door car/ roadster applications that require a compact round muffler.

Product Details

Body Height (in.):	5
Body Height:	5.000 in.
Body Length (in.):	8
Body Length:	8.000 in.
Body Width (in.):	5
Body Width:	5.000 in.
Construction:	All Welded
Description:	XR-1Ã‚Â® Stainless Sportsman Racing Mufflers
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Position:	Center
Inlet Size (in.):	3.5
Inlet Type:	Single Center
Main Piping Diameter:	3.500 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	3.500 in.
Outlet Position:	Center
Outlet Size (in.):	3.5
Outlet Type:	Single Center Outlet
Overall Length (in.):	13
Overall Length:	13.000 in.
Part Number:	bor40004S
Position:	N/A
Prop 65 (C, R or CR):	CR
Prop 65 - Long Label:	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Round
Tip / Outlet Finish:	N/A
Title Extended:	XR-1 Sportsman 3.5in Center-Center 8inx5in Round - Racing Muffler Part # 40004S
Title:	XR-1 Sportsman Racing Muffler 3.5in Center Inlet/ 3.5in Center Outlet 5in Round x 8in Long Body

Additional Information

This part is designed and intended for installation in Ancient (Model Year 1974 or earlier), or Competition, or Racing Vehicles. Competition or Racing Vehicles may be operated exclusively in 1) events organized by recognized bodies with authorizing permits for participating drivers. 2) racing event qualification, and 3) practice associated with events. Installation and operation of this part in a non-Ancient street driven Vehicle, including driving Competition or Racing Vehicles to the racetrack, is likely to be considered illegal Tampering or a Defeat Device

Application Summary

XR-1? Sportsman Racing Muffler - 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-14 02:09:54

Features

3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 8" Long Body 13" Overall Length
Compact size is perfect for applications with limited space
There is no logo embossment on this part
Un-Notched necks are designed for weld in installation
Universal muffler. Reversible design.

Specifications

Product Attributes - UPC: 808422400046
Product Attributes - Brand: Borla
Product Attributes - Notes: Straight through design for maximum flow. Continuous filament fiber acoustic material for sound control.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Round
Product Attributes - Reversible: No
Product Attributes - Product Line: Borla XR-1 Racing Mufflers
Product Attributes - Inlet Location: Center
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Brushed
Product Attributes - Outlet Location: Center
Product Attributes - Outlet Quantity: 1
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 3.50 in.
Product Attributes - Overall Length (in.): 12.00 in.
Product Attributes - Internal Construction: Straight-through core
Product Attributes - Outlet Diameter (in.): 3.50 in.
Product Attributes - Case Exterior Length (in.): 8.00 in.
Product Attributes - Manufacturer's Part Number: 40004S
Product Attributes - Case Outside Diameter (in.): 5.00 in.

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor40004S
SFX Item ID	4224903
Supplier Item Code	4224903
Manufacturer SKU	40004S
Manufacturer UPC	808422400046
Alternative References	xr-1, -1/2in, 5in, 8in